Software Engineer II WhatsApp
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Job Location:
Boston, NH - USA
Monthly Salary:
Not Disclosed
Posted on:
15 hours ago
Vacancies:
1 Vacancy
Job Summary
About the Role
Klaviyo is looking for a Full Stack Engineer to support key initiatives that enhance our product offerings and drive company this role youll play a critical part in delivering end-to-end solutions using both front-end and back-end technologies. Youll improve existing products and develop new capabilities that push the boundaries of whats possible for our customers.
As a Software Engineer II youll tackle complex challenges explore multiple solutions and weigh business and technical trade-offs to determine the best path forward. Youll actively contribute to team discussions and help shape important technology decisions. Youll also be responsible for shipping well-designed thoroughly tested solutions that prioritize reliability and performance.
The WhatsApp team builds the end-to-end experience for Klaviyos WhatsApp channel making it easy and powerful for customers to use our newest messaging channel effectively. We own the core WhatsApp product surface across Klaviyo ensuring its available wherever customers expect it while building and operating WhatsApp-specific capabilities like outbound and inbound pipelines and Meta template management.
We work cross-functionally by default. Partnering closely with teams across the org gives us broad exposure to the product lets us unblock other teams and allows us to drive impact well beyond our immediate scope. The work is fast-moving varied and forces us to constantly learn and adapt.
Looking ahead our focus is on scaling WhatsApp across Klaviyo. That means closing feature gaps rapidly integrating new Meta capabilities and running targeted adoption experiments to drive usage. The goal is simple: deliver the most complete high-quality WhatsApp integration in the marketand set the bar for what a marketing platform can do with this channel
What Were Looking For
- A proven track record of building high-quality products and systems with a focus on writing clean maintainable code
- 3 years of experience in a software engineering role
- Experience building end-to-end software solutions or deep experience with both front-end and back-end technologies
- Familiarity with code reviews and leading or participating in robust testing practices
- Experience working in agile fast-paced environments
Nice to Have
- Experience with Python and related technologies
- Experience with React and related technologies
- Background in digital marketing or customer data software
- Exposure to machine learning concepts or applications
- Experience building cloud-native solutions ideally on AWS
We use Covey as part of our hiring and / or promotional process. For jobs or candidates in NYC certain features may qualify it as an AEDT. As part of the evaluation process we provide Covey with job requirements and candidate submitted applications. We began using Covey Scout for Inbound on April 3 2025.
Please see the independent bias audit report covering our use of Covey here
Required Experience:
IC
Key Skills
- Spring
- .NET
- C/C++
- Go
- React
- OOP
- C#
- Data Structures
- JavaScript
- Software Development
- Java
- Distributed Systems
About Company
Klaviyo unifies AI-powered email marketing and SMS to drive growth, retention, and measurable results. Build personalized, omnichannel experiences across WhatsApp, ecommerce, and more with K:AI Agents.
